An empty van has a braking distance of 18 m. Loading increases its mass by 20%. It then brakes from 1.5 times its original speed, with the same constant resultant braking force. What is its new braking distance?
32.4 m32.4\ \mathrm{m}32.4 m
48.6 m48.6\ \mathrm{m}48.6 m
40.5 m40.5\ \mathrm{m}40.5 m
54.0 m54.0\ \mathrm{m}54.0 m
126 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.